SE8405261L - PROCEDURE FOR ANY Cryptographic Encryption Transmission from a Transmitter to a Receiving Device - Google Patents

PROCEDURE FOR ANY Cryptographic Encryption Transmission from a Transmitter to a Receiving Device

Info

Publication number
SE8405261L
SE8405261L SE8405261A SE8405261A SE8405261L SE 8405261 L SE8405261 L SE 8405261L SE 8405261 A SE8405261 A SE 8405261A SE 8405261 A SE8405261 A SE 8405261A SE 8405261 L SE8405261 L SE 8405261L
Authority
SE
Sweden
Prior art keywords
keystream
receiving unit
base key
data
transferred
Prior art date
Application number
SE8405261A
Other languages
Swedish (sv)
Other versions
SE8405261D0 (en
SE446145B (en
Inventor
A O Johansson
H O Andersson
Original Assignee
Stalcastin Hb
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stalcastin Hb filed Critical Stalcastin Hb
Priority to SE8405261A priority Critical patent/SE446145B/en
Publication of SE8405261D0 publication Critical patent/SE8405261D0/en
Publication of SE8405261L publication Critical patent/SE8405261L/en
Publication of SE446145B publication Critical patent/SE446145B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Facsimile Transmission Control (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

An encryption procedure for the transfer of data as characters from a sending to a receiving unit. An encrypted base key (BK) is produced in the sending unit, where after a modified base key (MBK) is formed through the combination of the initial base key (BK) with a random number (RND) issued by the receiving unit and is then transmitted encrypted to the receiving unit.By encrypting the random number (RND) in the modified base key (MBK), the first number of bits of a keystream (KS) is produced. A number (x) is then added before each subsequent encryption so that subsequent bits of the keystream (KS) are the same size.In transformation process 1 (TP 1), the data to be transferred is then converted by character following control information retrieved from the keystream (KS). In transformation process 2 (TP 2), the transferred information undergoes a similar reverse conversion at the receiving unit. This conversion is controlled by a keystream (KS) formed here for restoring the transferred data to text form.<IMAGE>
SE8405261A 1984-10-22 1984-10-22 Encryption procedure for the transfer of data as characters from a sending to a receiving unit SE446145B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE8405261A SE446145B (en) 1984-10-22 1984-10-22 Encryption procedure for the transfer of data as characters from a sending to a receiving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8405261A SE446145B (en) 1984-10-22 1984-10-22 Encryption procedure for the transfer of data as characters from a sending to a receiving unit

Publications (3)

Publication Number Publication Date
SE8405261D0 SE8405261D0 (en) 1984-10-22
SE8405261L true SE8405261L (en) 1986-04-23
SE446145B SE446145B (en) 1986-08-11

Family

ID=20357435

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8405261A SE446145B (en) 1984-10-22 1984-10-22 Encryption procedure for the transfer of data as characters from a sending to a receiving unit

Country Status (1)

Country Link
SE (1) SE446145B (en)

Also Published As

Publication number Publication date
SE8405261D0 (en) 1984-10-22
SE446145B (en) 1986-08-11

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